Show behaviours of pCampbot bots in "show bots" and "show bot" console commands
Fix build break from last commit 9c65207.  Mono 2.4 lacks string.join(string, List<string>), or some auto casting is missing
And fix break in "show bot" from commit 9c65207
Add ability to adjust pCampbot bot behaviours whilst running with "add behaviour <behaviour-name> <bot-number>" console commad
Add pCampbot "remove behaviour" console command for removing bot behaviours during operation.

Doesn't currently work very well as stopping physics, for instance, can leave bot travelling in old direction
Add Close() method to IBehaviour to allow behaviours to cleanup when removed or bot it disconnected.

In this case, it is used to turn off jump when physics testing behaviour is removed.